Marking device



C. J. BALLASH MARKING DEVICE July 3o, 1963 2 Sheets-Sheet 1 Filed July 21, 1960 ATTORNEYS C. J. BALLASH MARKING DEVICE July 30, 1963 2 Sheets-Sheet 2 Filed July 2l, 1960 INVENTOR. CLARENCE J. BALLASH ATTORNEYS ite States water 3,099,186 MARKING DEVICE Clarence J. Ballash, Cleveland, Ohio, assigner, by mesne assignments, to The Cooper-Bessemer Corporation, Euclid, Ohio, a corporation of Ohio Filed Iuly 21, 1960, Ser. No. 44,463 10 Claims. (Cl. 9i-227) 'Fhe invention relates in general to marking devices and more particularly to such devices for marking metal objects.

An object of the invention is to provide a uid pressure actuated marking device with `a new and novel valve or throttle assembly for controlling the flow of uid which is preferably air.

Another object of the invention is to provide -a device for marking metal and similar objects which cannot be stalled.

Another object of the invention is to provide a pneumatically actuated marking device where-in the power Aand return strokes of a hammer member are controlled by the relative positions of the 4hammer mem-ber and a control p1st0n.

Another object of the invention is to provide a pneumatically actuated marking `device with 4a new and novel means of assembling the components of the device.

Another object of the device is to provide a new and novel throttle r valving assembly, which includes a pivot member and an annular control member surrounding the Isame and rotatable with respect thereto and iirst and second sealing members one of which is at a right angle and one Iat an acute angle with respect to the pivot member and which provide a seal Ibetween the pivot member and control member whereby a slot in the control member overlies Ithe acute angled sealing member when the control member is rotated to permit passage of iluid.

Another object of the invention is to provide a marking device wherein the stylus or marking member is no-t connected, or in other words, is separate from the hammer memmer lor mechanism which is utilized to provide ythe impact to the stylus member.

Other objects and a fuller understanding of this invention may be had by referring to the following description and claims, taken in conjunction with the accompanying drawings, in which:

FIGURE 1 is a longitudinal section of the marking device of the present invention and showing the device just ready to begin a power or impact stroke;

FIGURE 2 is a longitudinal `section of the marking device of the present invention and showing the `device just after the completion of the impact stroke and with the parts ready to be moved on -a return stroke;

FIGURE 3 is a fragmentary view of the lef't end of the device of FIGURES 1 and 2 with the throttle or valve assembly in the of position;

FIGURE 4 is an enlarged cross-sectional view taken generally along `the line 4`4 of FIGURE 2;

v FIGURE 5 is an enlarged cross-sectional View taken generally along the line 5 5 of FIGURE l;

FIGURE 6 is an enlarged cross-sectional view taken generally along the line 6 6 of FIGURE 1;

FIGURE 7 is lan enlarged cross-sectional View taken generally `along the line 7-7 of FIGURE 2;

FIGURE 8 is an enlarged cross-sectional View taken generally along the line 8-8 of FIGURE 1;

FIGURE 9 is an enlarged cross-sectional view taken generally along the line 9--9 of FIGURE l;

FIGURE 10 is an enlarged cross-sectional view taken generally along the line lil-10 of FIGURE l; and

FIGURE 11 is an isometric view of a control bushing shown in FIGURES 1, 2, and 3.

The marking device of the present invention has been indicated generally by the reference numeral 20 `and includes in combination a main annular housing 23 having first and second end portions 24 and 25, respectively. An annular stylus hou-sing 28 is also provided and includes irst and second end portions 29 and 30, respectively. The stylus housing 28 is positioned in the lirst end portion 24 of the main housing 23 with a irst end portion 29 thereof extending from the rst en-d portion of the main housing. The rst end portion 29 of the stylus housing has male threads 33 thereon and a cap member 35 is threadably secured thereto by means of female threads 36. A metal ring 38 resides in -a groove on the surface of the rst end portion 29 of the stylus housing 2S and is engageable with the left end of the cap member 35 to limit the threadable movement of the end cap on the threads 33. This provides a convenient means of 1ocating the position of the cap relative .to the stylus housmg.

A `stylus member 40 is provided which has what may be referred -to as three portions, namely a marking end portion 41, an impact end portion 42, and a shouldered portion 43. The marking end portion 41 extends through and from lthe end cap member and is the portion of the stylus member which engages the object to be marked. The impact .lend portion 42 resides within the stylus housing and the intermediate shouldered portion 43 which is located between the marking and impact end portions resides within an enclosure 46 which is formed by the cap member and the extreme end of the irst end portion 29 of the stylus housing. An O-ring 48 surrounds the stylus member and .is positioned between the intermediate shouldered portion 43 and the cap member 35.

An annular hammer member 5i) which has first and second end Iportions 5i and 52, respectively, is positioned in the second end por-tion 30 of the stylus housing and is movable between iirst `and second positions to engage the impact end portion 42 of the stylus member 40. FIGURE l shows the annular hammer member in position to start the power stroke to strike the stylus member and FIGURE 2 shows the position of the hammer member just after the power stroke is completed. Power inlet port means 53 and return power inlet port means 54 extend through the wall of the annular hammer member and serve -to admit air to move the hammer member on the abovereferred to power and return stroke. Power exhaust port means 57 and return exhaust port means 58 extend between the exterior and interior of the respective end portions of the stylus housing 38. The ports 57 and 58 communicate with the atmosphere by way of the space 59 between the main housing 23 and the stylus housing 28 and also by way of the space 60 between the end cap member and the main housing 23. A control piston 61 is positioned in the annular hammer member 5t) and also is provided with first and second end portions 62 and 63, respectively. The rst end portion 62 of the control piston as will he seen from FEGURES l and 2 controls the passage of air through the power and return inlet port means 53 and Se, respectively. In other words, the rciative positions of the control piston and the hammer member will determine whether air is permitted to tlow to the right end of the hammer member or to the left end, as seen in FIGURES 1 and 2. if air passes to the left end, the hammer will be moved on a power stroke, and if air passes to the right end, the hammer will be moved on a return stroke. The operation of the device will be discussed in more detail hereinafter.

A cup member 64 abuts the extreme end of the second end portion 300i the stylus housing and the left or open end of the cup member is closed by means of a ball member 66. This provides a closed construction within which resides a head member 65 which is provided on the second end portion 63 of the control piston 61. 'It should be pointed tout at this time that the engagement of the head member 65 with the cup member as shown in FIGURE l is not a sealing fit and air can pass by these two members, A throttle assembly 68 is provided and is positioned in the second end portion 25 of the main housing 23 and is for the purpose of regulating air to the power and return inlet ports 53 and 54 in order to order to actuate the device. This throttle assembly comprise a stem member 7b which has `a first end portion 71 threadably secured in the main housing and this end portion engages the ball member 66 to hold the same in place on the open end of the cup member 64. Corresponding threads have not been shown on the inner surface of the housing; however, such threads exist and the only reason for doing this is for more ease in illustration. The stem member "itl also has a second end portion 72 which extends externally of the main housing and has conduit means 73 for connection to a source of fluid supply, preferably air. This source of air supply may range anywhere from 2i? pounds per square inch up to full shop air pressure. A -control bushing 7 4 is positioned between the inner wall of the main housing and the stem member 70. This control` bushing is spaced from the stem member to provide a clearance therebetween. The control bushing has a knurled end portion 78 which extends to the outside of the housing and is for the purpose of rotating the control bushing by hand. As will be seen, the control bushing is held in place by a washer 85 and a snap ring S6. A first O-ring 76 is positioned in an O-ring groove in the stern member such that it is positioned between the control bushing and the stem member and provides an air tight seal therebetween. This first O-ring or sealing Amember end groove is located at an acute angle in respect to the axis of the stem member. A second O-ring 77 is positioned in a second O-ring groove and is located between the control bushing and the stem member to provide an air tight seal therebetween. This O-ring is located at substantially a right angle to the axis of the stem member 70 as will be seen in FIGURES 1-3. The axis of the stem member lies substantially on the axis of the entire marking device, or in other words, in the direction that the control piston and stylus member extend. The conduit means 73 referred to above communicates with and provides air to the space 79 between the first and second C-rings "76 and 77 and between the control bushing and the stem member. Wall means 31 define an axial slot inthe control bushing 74 (best seen in FiGURE 1l) and a shoulder 82 is also provided on the control bushing which is engageable with an abutment S3 in the form of a pin member connected to the stern member to determine the first and second positions of the control bushing. FIGURES 1 and 2 show the iirst or open position of the control bushing wherein air passes to the power and return inlet port means 53 and 54 by way of -a slot S7 in the irst end portion 71 of the stem member, past the ball member 66 and in through a port 88 in the wall of the stylus housing. FIGURE 3 shows the second or closed position of the throttle assembly wherein no air is permitted to pass.

In operation, assume that the throttle assembly is in the position shown in FIGURE 3 or in other words, the closed or second position. Since the slot or wall means fill lies outside the axial distance between O-rings 76 and 77, the air admitted to space '79 cannot travel therefrom. As soon as the control Ibushing 74 is rotated to a position where the slot or some portion thereof resides within the axial distance between O-rings 76 and 77, air will pass from the space 79 to port 88 (positions of FIGURES l and 2). The cont-rol bushing has been shown completely open -in FIGURES 1 and 2, and it will be appreciated that intermediate positions between that shown in FIGURES l and 3 will permit passage of varied amounts of air. Assume now that the hammer and control piston are in the positions shown in FIGURE 1 and as a result air will iow through inlet port means 53 along the reduced diameter of the control piston 61 to the left end of the hammer member 50 and also into the cup member 64 to act upon the left end of the head member 65'. When this happens, the hammer member 50 is caused tot move to the right along with the control piston 61. Prior to this, air has been exhausted from the right end of the hammer member by way of return exhaust port means 58 and space 59 and 69. Movement of the hammer member to the right causes the same to strike end portion 42 of the stylus 40 and causes the marking end portion 41 to strike the object to be marked. When the hammer member and control piston have moved to the right, the return inlet port means 54 is opened and the hammer member closes the return exhaust port means 58. This permits air under pressure to travel to the right end of the hammer member which air pressure acts upon the right end of the control member 61 to move it to the left and also causes the hammer member to be moved to the left. It will be noted that the left end of the hammer member is exhausted through power exhaust port means 57 and space 59 and 6G. This `cycle of events is continually repeated until the throttle or valving assembly 68 is turned off aud air under pressure is no longer transmitted to the inlet port means 53 and 54. It wil `be noted that a sealing ring 89 is positioned between the control bushing 74 and the extreme end of the second end portion of the main housing 23. This is for the purpose of providing an air tight seal at this place.

It will thus be seen that the marking device of the present invention has been provided with a new and novel throttle or valving assembly for controlling the flow of air to the impact or marking end portion of the device. Since the movement of the stylus 40 to the left as seen in FIGURES 1 and 2 is limited by means of the shouldered portion 43 and since the hammer member 5i? is a separately actuated part, the device cannot be stalled or in other words, theA hammer member cannot be prevented from passing through its cycle of operation and as a result impacts are continuously transmitted to the stylus. With `the general arrangement of the elem-ents of the present invention as shown and described, namely with the stem member 76, ball member 66, lcup member 64, and the control piston and hammer member, the device can be conveniently assembled and disassembled. It will also be seen that the other objects and advantages pointed out hereinabove are accomplished by the teachings contained herein.

Although this invention has been described in its preferred form with a certain degree of particularity, it is understood that the present disclosure of the preferred form has been made only by way of example and that numerous changes in the details of construction and the combination and `arrangement of parts may be resorted to without departing from the spirit and the scope of the invention as hereinafter claimed.

What is claimed is:

l. A control valve for controlling the passage of a fluid including in combination la pivot member having an axis, first and second spaced sealing ring grooves on the surface of said pivot member and being spaced from each other, lan annular control member surrounding and spaced from -said pivot member and being rotatable between first and second positions thereabourt, said rst sealing ring groove being at substantially a right angle with respect to said pivot member axis and said second sealing ring groove being at an acute angle with respect to said pivot member axis, first and second sealing rings residing in said first and second sealing ring grooves, respectively, and making `a seal between said pivot member and said annular control member and also defining a chamber, conduit means through one end portion of said pivot member and extending to said chamber for transmitting a iiuid thereto, wall means defining an axially extending slot in said annular control member, said slot being located outside the axial extent of said chamber between said first and second sealing rings in said first position of said control member and said slot being at least partially located within the axial extent of said chamber between said first and second sealing rings in said second position of said control member whereby fluid may flow from said chamber.

2. A control valve for controlling the passage of a fluid includ-ing in combination a pivot member having an axis, an annular control member surrounding and spaced from said pivot member and being rotatable between first and second positions thereabout, first and second spaced sealing ring grooves on one of said pivot :and control member and being spaced from each other, said first sealing ring groove being at substantially ya right angle with respect to said pivot member axis and said second sealing ring groove being at an acute angle with respect to said pivot member axis, first and second sealing members residing in said first and second sealing ring grooves, respectively, and making a seal between said pivot member and said annular control member and also defining a cham-ber, conduit means extending to said chamber for transmitting a fluid thereto, wall means defining a slot in said annular control member, said slot being located outside the axial extent of said chamber between said first and second sealing members i-n said first position of said control member and said slot being at least partially located within lthe axial extent of s-aid chamber between said first and second sealing members in said second position of said control member Whereby fluid may fiow from lsaid chamber.

3. A marking device including in `combination an annular housing having first and second end portions, an annular hammer member positioned in said second end portion of said housing and movable yaxially between first and second positions, return inlet port means and power inlet port means extending through the wall of said hammer member for introducing air under pressure to first and second ends of said hammer member, return exhaust port eans and power exhaust port means extending through the wall of said housing member at first and sec-ond end portions thereof for exhausting air from the first and second end portions of said housing member, a control piston member having first and second end portions and positioned in said -annular hammer member for controlling said return and power inlet port means, said second end portion of said control piston member having Ka head portion thereon capable of limited axial movement to control the Iaxial movement of said control piston member, said inlet and exhaust port means being controlled by the positions of said hammer and piston members.

4. A marking device including in combination an annular housing having first and second end portions, an

annular hammer member positioned in said second end portion of said housing and movable axially between first and second positions, return inlet port means and pofwer inlet port means extending through the wall of said hammer member lfor introducing fluid under pressure to first and second ends of said hammer member, return exhaust port -means and power exhaust port means extending through the wall of said housing member at first and second end portions thereof for exhausting fluid from the first and second end portions of said housing member, a control piston havin-g first and second end portions and positioned in said annular hammer member for controlling said return and power inlet port means, said control piston being capable of limited axial movement, said inlet and exhaust port means being controlled by the positions of said hammer and piston members.

5. A pneumatically powered device including in combination a main annular housing having first and second end portions, a secondary housing having first and second end portions and positioned in said first end portion of said main housing with said first end portion thereof extending fiom said first end portion of main housing, an annular hammer member having rst and second end portions and positioned in said second end portion of said secondary housing and movable between first and second positions, power inlet port means and return inlet port rneans extending between the exterior :and interior of said annular hammer member, power exhaust port means and return exhaust port means extending between the exterior and interior o-f sai-d second end portion of said secondary housing, a control piston having -first and second end portions and positioned in said hammer member, said first end portion of said control piston controlling said power and return inlet port means, `a cup member abutting the Vextreme end of said second end portion of said secondary Vthreadably secured in said main housing and engaging said ball member to hold same in place on said open end of said cup member, said stem mem-ber having a second end portion extending exteriorly of said main housing and having conduit means for connection to a source of air supply, a control bushing positioned between said main housing and said stem member, said control bushing being radially spaced from said stem member, Va first O-ring posi-tioned between said control bushing and stem member and located generally at an acute angle to the axis of said stem member, a second O-ring positioned between said control bushing and stem member land located at a right angle with respect to the axis of said stem member, said conduit means communicating with said space Ibetween said first and second O-rings and between said control bushing and stem member, wall means defining an axial slot in said control bushing, said control bushing being rotatable about said stem member between first and second positions, a shoulder on said control bushing, an abutment on said stem member for engagement with said shoulder to determine said first and second positions of said control bushing, said slot and said first O-ring in said first position of said control bushing prohibiting passage of air to said power and return inlet ports `and in said second position permitting said passage of air, intermediate positions of szidcontrol bushing permitting passage of varied amounts o air.

6. A pneumatically powered device including in cornbin-ation a main 4housing having first and second end portions, a secondary housing having first and second end portions and positioned in said first end portion of said main housing with said first end portion extending from said first end portion of main housing, a hammer member having first and second end portions and positioned in said second end portion of said secondary housing and movable between first and second positions, power inlet port means Vtrol pist-on having rst land second end portions land positioned in said hammer member, said first end portion of said control piston controlling said power and return inlet port means, a cup member abutting said second end portion of said secondary housing, said second end portion of said control piston having Ia head member thereon, a ball member closing the open end of said cup member thereby forming a closed chamber within which said head member of said control piston resides, .a throttle assembly positioned in said second end portion of said main housing for regulating air to said power and return inlet por-ts, said throttle assembly compressing a stem member having a first end portion secured in said main housing and engaging said ball member to hold same in place on said open end of said cup member, said stem member having a second end pontion extending exteriorly of said main housing and having conduit means for connection to a source of air supply, a control bushing positioned between said main housing and said stern member, said control bushing being radially spaced from said stem member, a first sealing ring positioned between said control bushing and stem member and located generally at an acute angle to the axis yof said stem member, a second sealing ring positioned between said control bushing and stern member and located at `a right angle with respect to the laxis `of said stem member, said conduit means communicating with said space between said first and second sealing rings and 4between said control bushing and stem member, wall means defining an axial slot in said control bushing, said control bushing being rotatable about said stem member between first and second positions, a shoulder on said control bushing, an abutment on said stem member for engagement with said shoulder to `determine said first and second positions of said control bushing, said slot and said first sealing ring in said first position of said control bushing prohibiting passage of air to said power and return inlet ports and in said second position permitting said passage of air, intermediate positions of said contnol bushing permitting passage of varied amounts of air.

7. A device including in combination a main housing having first and second end portions, a secondary housing having first and second end portions and positioned in said first end portion of said main housing, a hammer member having first and second end portions and positioned in said second end portion of said secondary housing and movable between first and second positions, power inlet port means and return inlet port mean-s extending between the exterior and interior of said hammer member, power exhaust port means and return exhaust port means extending between the exterior and interior of said second end portion of said secondary housing, a control piston having first and second end portions and positioned in said hammer member, said first end portion of said control piston controlling said power and return inlet por-t means, a cup member abutting the extreme end of said second end portion of said secondary housing, said second end portion of said control piston having a head member thereon, a ball mem-ber closing the open end of said cup member thereby forming a closed chamber within which said head member of said control piston resides, `a throttle assembly positioned in said second end portion of said main housing for regulating fluid to said power and return inlet ports, said throttle assembly comprising a stem member having a first end portion secured in said main housing Iand engaging said ball member to hold same in place on said open end of said cup member, said stern member having a second end portion extending exteriorly of said main housing and having conduit means for connection to .a source of fluid supply, a control bushing positioned between said 'main housing and said stem member, said d control bushing being spaced from said stem member, a first sealing member positioned between said control bushing and stem member and located generally at an acute angle to the axis of said 4stem member, a second sealing member positioned between said control bushing and stem member and located at -generally a right `angle with respect to the axis of the axis of said stem member, said conduit means communicating with said space `between said first and second sealing members and between said control bushing `and stem mem-ber, wall means defining 1a slot in said control bushing, said control bushing being rotatable about said stem member between first and second positions, means cooperating between 4said control bushing and vsaid stem member to determine said first and second positions of said control bushing, said slot and said first sealing member in said rst position of said control bushing prohibiting passage of fluid to said power and return inlet ports and in said second position permitting said passing of fluid, intermediate positions of said control bushing permitting passage of varied amounts of fiuid.

8. A device including in combination a main housing having first and second :end portions, a secondary housing having first and second end portions and positioned in said first end portion of said main housing, a hammer member having first and second end portions and positioned in said second end portion of said secondary housing and movable between rst and second positions, power inlet port means and return inlet port means extending between the exterior and interior of said hammer member, power exhaust port means and return exhaust port means extending between the exterior and interior of said second end portion of said secondary housing, a control piston having first and second end portions and positioned in said hammer member, said first end portion `of said control piston controlling said power `and return inlet port means, a cup member abutting said second end portion of said Secondary housing, said second end portion of' said -control piston having a head member thereon, a ball member closing the o-pen end of said cup member thereby forming a closed chamber 'within which said head member of said control piston resides, and valve lmeans -at said second end portion of said main hou-sing for regulating fluid to said power and return inlet ports.

9. A control valve for controlling the passage of a fluid including in combination a pivot member having an axis, an annular control member :surrounding said pivot memer, one of said pivot and annular control members being movable between rst and second positions relative to the other, first and second sealing means `acting between said pivot and control member and being spaced from each other, a cham-ber defined between said first and second sealing means, conduit means extending to said chamber Ifor transmitting a fiuid thereto, wall means defining an opening in one of said annular control and pivot members, said opening being located outside the extent of said chamber between said first and second sealing means in said first position of said one of said pivot and annular control members 'and said opening being at least partially located within the extent of said chamber between said first and second sealing means in said second position of said one of said pivot and annular control members whereby fluid may flo-w from said chamber.

l0. A con-.rol valve for controlling the passage of a fluid including in combination a first member, a control member cooperating with said first member and being movable between first and second positions relative thereto, first and second spaced sealing means on one of said first and control members and bein-g spaced from each other, a chamber defined between said first and second sealing means, conduit means extending to said chamber for transmitting a fluid thereto, wall means defining an opening in said control member, sai-d opening being located outside the extent of said chamber between said first :and second sealing means in said first position of said control members and said opening being at least partially 9 located Within the extent of said chamber between said first and second sealing means in said second position of lsaid control member whereby Huid may flow from said chamber.

5 References Cited in the le of this patent UNITED STATES PATENTS 526,342 Carlinet Sept. 18, 1894 1,122,630 Peck Dec. 29, 1914 1,481,643 Jimerm 11111.22, 1924 10 1,882,520 Pollard Oct. 11, 1932 1,940,143 Overly Dec. 19, 1933 10 Pfeiffer Ian. 1, 1946 Dittmann Jan. 2, 1951 Mueller Dec. 16, 1952 Mueller Mar. 10, 1953 Johnson June 5, 1956 Pannen Apr. 23, 1957 Kibbe July 12, 19601 FOREIGN PATENTS Great Britain Sept. 4, 1940 Italy Mar. 20, 1954 France Apr. 14, 1960 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent, No. 3,099,186 July 30, 1963 Clarence J. Ballash It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 7, line 17, for "compressing" read comprising column 8, line 7, strike out "of the axis"; line 75, for "members" read member Signed and sea1ed this 25th day of February 1964.

(SEAL) Attest:

ERNEST W- SWIDER Enum L.: nsieroibz ttesting Officer AC ti ng Commissioner of Patents 

1. A CONTROL VALVE FOR CONTROLLING THE PASSAGE OF A FLUID INCLUDING IN COMBINATION A PIVOT MEMBER HAVING AN AXIS, FIRST AND SECOND SPACED SEALING RING GROOVES ON THE SURFACE OF SAID PIVOT MEMBER AND BEING SPACED FROM EACH OTHER, AN ANNULAR CONTROL MEMBER SURROUNDING AND SPACED FROM SAID PIVOT MEMBER AND BEING ROTATABLE BETWEEN FIRST AND SECOND POSITIONS THEREABOUT, SAID FIRST SEALING RING GROOVE BEING AT SUBSTANTIALLY A RIGHT ANGLE WITH RESPECT TO SAID PIVOT MEMBER AXIS AND SAID SECOND SEALING RING GROOVE BEING AT AN ACUTE ANGLE WITH RESPECT TO SAID PIVOT MEMBER AXIS, FIRST AND SECOND SEALING RINGS RESIDING IN SAID FIRST AND SECOND SEALING RING GROOVES, RESPECTIVELY, AND MAKING A SEAL BETWEEN SAID PIVOT MEMBER 